Fix ThreadJob installation error of smoke test

.azure-pipelines/util/smoke-test-steps.yml

@@ -78,13 +78,6 @@ jobs:
        Write-Host "List artifacts..."
        Get-ChildItem "$(Pipeline.Workspace)\\LocalRepo\\"
 
-  - task: NuGetCommand@2
-    condition: and(succeeded(), eq('${{ parameters.psVersion }}', '5.1.14'))
-    displayName: 'Download ThreadJob .nupkg File for PowerShell 5.1.14'
-    inputs:
-      command: custom
-      arguments: 'install ThreadJob -directdownload -packagesavemode nupkg -source https://www.powershellgallery.com/api/v2 -OutputDirectory packages'
-
   - task: NuGetCommand@2
     condition: and(succeeded(), eq(variables['GalleryName'], 'LocalRepo'))
     displayName: 'Download Previous Az .nupkg Files'

tools/Test/SmokeTest/InstallAzModules.ps1

@@ -42,13 +42,6 @@ Register-Gallery $gallery $localRepoLocation
 
 Write-Host "Installing Az..."
 Install-Module -Name Az -Repository $gallery -Scope CurrentUser -AllowClobber -Force 
-
-$file = Get-ChildItem $localRepoLocation | Where-Object {$_.Name -like "ThreadJob*"}
-$installedModule = Get-Module -ListAVailable -Name ThreadJob
-if ($file -ne $null -and $installedModule -eq $null) {
-  Write-Host "Install ThreadJob..."
-  Install-Module -Name ThreadJob -Repository $gallery -Scope CurrentUser -AllowClobber -Force
-}
 
 # Check version
 Import-Module -MinimumVersion '2.6.0' -Name 'Az' -Force
@@ -61,4 +54,4 @@ Get-Module -Name Az.* -ListAvailable
 
 if (!$azVersion) {
   throw "No Az is installed"
-}
+}

tools/Test/SmokeTest/PrepareRequiredPowershell.ps1

@@ -56,6 +56,22 @@ function Install-PowerShell {
       dotnet tool run pwsh -c $command
     }
   }
+
+  #Install ThreadJob for Windows PowerShell
+  if ($requiredPsVersion -eq $windowsPowershellVersion) {
+    Write-Host "Install ThreadJob for Windows PowerShell."
+    $installedModule = Get-Module -ListAVailable -Name ThreadJob
+    if ($installedModule -eq $null) {
+      try {
+        Install-Module -Name ThreadJob -Repository PSGallery -Scope CurrentUser -AllowClobber -Force
+        Write-Host "Install ThreadJob successfully."
+      }
+      catch {
+        Write-Host "Fail to install ThreadJob from PSGallery."
+        Write-Host $_
+      }
+    }
+  }
 }
 
 # Image "macOS-10.15" preinstalled Az modules